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Finding the Fourth Proportional to 90,082.33, 124,311.78 and 49,797.79

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Solution

The fourth proportional to 90,082.33, 124,311.78 and 49,797.79 is: 68,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,082.33 : 124,311.78 = 49,797.79 : x
  2. Step 2: Convert to fraction form
    90,082.33/124,311.78 = 49,797.79/x
  3. Step 3: Cross multiply
    90,082.33x = 124,311.78 × 49,797.79
  4. Step 4: Simplify right side
    90,082.33x = 6,190,451,604.19
  5. Step 5: Solve for x
    x = 6,190,451,604.19/90,082.33
  6. Step 6: Final answer
    x = 68,719.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.